Fan



FIG. 1 is a perspective front view showing a fan;

FIG. 2 is a perspective rear view;

FIG. 3 is a front view;

FIG. 4 is a rear view;

FIG. 5 is a right side view, with respect to FIG. 1;

FIG. 6 is a left side view, with respect to FIG. 1;

FIG. 7 is a top side view, with respect to FIG. 1; and,

FIG. 8 is a bottom side view with respect to FIG. 1. 

CLAIM The ornamental design for a fan, as shown and described. 